Synonyms of caustic in English:

caustic


See definition of caustic

adjective

1‘a caustic cleaner’

SYNONYMS
corrosive, corroding, mordant, acid, alkaline, burning, stinging, acrid, harsh, destructive

2‘a caustic comment’

SYNONYMS
sarcastic, cutting, biting, mordant, stinging, sharp, bitter, scathing, derisive, sardonic, ironic, scornful, trenchant, acerbic, vitriolic, tart, acid, pungent, acrimonious, astringent, rapier-like, razor-edged, critical, polemic, virulent, venomous, waspish
British informal sarky
rare mordacious, acidulous
ANTONYMS

kind